# Crontab Expression Generator

> Crontab Expression Generator is a paid API for AI agents from klymax402.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).

Converts a natural language schedule description into a cron expression with explanation and upcoming execution times

## Facts

- Endpoint: GET https://klymax402.com/api/crontab-generator/api/generate
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/crontab-expression-generator-7d1fea59
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_VZid6QQ1INP0v2A2L_TTl

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability crontab-expression-generator-7d1fea59
```

Example prompt: Can you generate a cron expression for a job that runs every Monday at 9am? I want to know the exact crontab syntax, what it means in plain English, and when it will next fire.

## When to prefer this

Choose this endpoint when you need to programmatically convert human-readable schedule descriptions to cron syntax without requiring a developer to manually construct the expression. Ideal for AI agents building automation pipelines, onboarding users into scheduled tasks, or validating that a natural language schedule maps to the intended cron timing. At $0.003/call it is cost-effective for high-volume schedule generation.

## Known failure modes

- Ambiguous schedule description may produce an incorrect or approximate cron expression
- Very complex or irregular schedules (e.g. 'every other Tuesday except holidays') may not map cleanly to standard cron syntax
- Empty or missing description field returns an error
- Payment failure (insufficient USDC balance) blocks the request with a 402 response

## How this service works

One MCP endpoint gives your AI agent access to 100 APIs -- crypto, DeFi, web, AI, finance and utilities. No API keys, USDC on Base from $0.003/call.

## Output

A JSON object containing the original input description, the generated cron expression string, a plain-English explanation of what the expression means, and an array of upcoming scheduled execution timestamps.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "description": {
   "type": "string",
   "description": "Natural language description of the schedule (e.g. 'every Monday at 9am', 'twice a day', 'every 5 minutes')"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "input": "example",
  "expression": "example",
  "explanation": "example",
  "nextExecutions": []
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/crontab-expression-generator-7d1fea59/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from klymax402.com](https://www.zero.xyz/host/klymax402.com/llms.txt)